as world leaders come together again to wrangle over climate change in copenhagen....a small amount of comfort has emerged from the economic crisis. those government scrappage schemes to encourage people to buy new cars mean that there are more clean, new machines on the roads than ever before. >> abirached: with revenues of around $8 billion, americas nfl is the worlds richest sports league. 19 of its 32 teams are worth more than $1 billion, and in 2008 over 90% of its games were sellouts. quite simply, in every measure its a financial success story. a large part of that success is down to the image the game portrays of itself, and the mythology its built up over the years. and much of that is due tothe work of an iconic american institution, called nfl films. >>reporter: each year, in every corner of the united states...as summer draws to a close, the thoughts of sportsfans turn to a game tt has captured american hearts like none other... and rest assured...each season every pass, tackle and touchdown, will be captured by nfl films... >>sabol: footballs a great sport for film. there